Should FA Cup run save Arsene Wenger at Arsenal?

After an unlikely 2-1 victory over Manchester City, Arsenal are set to take on Chelsea in the finals of the FA Cup. The competition marks Arsenal's last chance at any kind of success for this season, and perhaps the final chance for Arsene Wenger, whose future with the club after 21 years is firmly up in the air. It's indicative of the priorities of modern soccer that the latter years of Wenger's career are largely seen as underwhelming, despite the fact that a Cup victory would mark the team's third in four years. Wenger, who has often been derided for saying way back in 2012 that fourth place is like a trophy, looks set to test that theory this year. Without that fourth-place finish, would FA Cup hardware be enough to salvage the season?